FANG Hua, ZHANG Zhenhua, CHANG Xinbo, et al. Preparation and electrochemical capacitance properties analysis of hierarchically porous graphene/activated carbon composites[J]. Journal of Light Industry, 2018, 33(5): 77-82. doi: 10.3969/j.issn.2096-1553.2018.05.010
Citation:
FANG Hua, ZHANG Zhenhua, CHANG Xinbo, et al. Preparation and electrochemical capacitance properties analysis of hierarchically porous graphene/activated carbon composites[J]. Journal of Light Industry, 2018, 33(5): 77-82.
doi:
10.3969/j.issn.2096-1553.2018.05.010
Preparation and electrochemical capacitance properties analysis of hierarchically porous graphene/activated carbon composites
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College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
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Received Date:
2018-07-02
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Abstract
The graphene/phenolic resin composites were prepared by liquid phase blending method using phenolic resin and graphene oxide as raw materials, and then graphene/activated carbon composites were prepared by high temperature carbonization and activation process. Cyclic voltammetry and constant current charge-discharge tests were used to characterize the electrochemical capacitance. The results showed that the composite had a specific capacitance of 197 F·g-1 at a current density of 0.5 A·g-1, and the current density increased to 10 A·g-1, the specific capacitance was 163 F·g-1, the current was increased by 20 times, the capacitance retention rate was 83%, and the cycle was repeated 1000 times at a current density of 0.5 A·g-1, and no capacity was attenuated, the capacity retention rate was 100%, which indicated that the composite material had excellent capacitance properties.
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Proportional views
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